When light ray pass from air into water, its speed and wavelength change only the frequency of the light doesn't change.
Light travels slower in a medium of higher refractive index. It bends because of this change in speed. The wavelength of light also changes in order to maintain the constant frequency.
Answer:
C. both a speed and a direction
Answer:
A
Explanation:
Diffraction, as the waves spread out (specifically spread to the whole house) by passing the door.
As the distance between two charged objects increases, the strength of the electrical force between the objects <em>decreases</em>.
Answer:
Explanation:
Given that,
Radius, r = 2 m
Velocity, v = 1 m/s
We need to find the magnitude of the centripetal acceleration. The formula for the centripetal acceleration is given by :
So, the magnitude of centripetal acceleration is 
.
